<ARTICLE> 5 <LEGEND> (Replace this text with the legend) </LEGEND> <CIK> 0000354913 <NAME> InterDigital Communications Corporation <MULTIPLIER> 1,000 <CURRENCY> U.S. Dollars <PERIOD-TYPE> YEAR <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-START> JAN-01-1999 <PERIOD-END> DEC-31-1999 <EXCHANGE-RATE> 1.000 <CASH> 14,592 <SECURITIES> 68,550 <RECEIVABLES> 11,357 <ALLOWANCES> 473 <INVENTORY> 3,092 <CURRENT-ASSETS> 108,479 <PP&E> 24,997 <DEPRECIATION> 17,603 <TOTAL-ASSETS> 126,308 <CURRENT-LIABILITIES> 13,245 <BONDS> 2,559 <PREFERRED-MANDATORY> 0 <PREFERRED> 10 <COMMON> 510 <OTHER-SE> 108,724 <TOTAL-LIABILITY-AND-EQUITY> 126,308 <SALES> 4,496 <TOTAL-REVENUES> 70,667 <CGS> 5,876 <TOTAL-COSTS> 5,876 <OTHER-EXPENSES> 20,481 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 323 <INCOME-PRETAX> 29,952 <INCOME-TAX> 3,246 <INCOME-CONTINUING> 26,706 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 26,706 <EPS-BASIC> .55 <EPS-DILUTED> .52